Voltaic cell



Patented Dec. 29, 1925. v

UNITED STATES PATENT OFFICE.

MILLER EUGENE CONRAD, OF ATLANTIC, IOWA, ASSIGNOR T C. B. SCHOENMEHL IN-CORIPORATED, OF WATERBURY, CONNECTICUT, A CORPORATION OF CONNECTICUT.

VOLTAIC CELL.

No Drawing. Application filed February 9, 1921. Serial No. 443,616.

To all whom it may concern: production of a depolarizing element with Beit known that I, MILLER EUGENE CoN- low resistance and developingrelatively RAD, a citizen of the United States, and resihigh voltage.dent of Atlantic, in the county of Cass and This process of impregnatingthe negative State of Iowa, have invented certain new and element withthe fumes or vapor of sulphur useful Improvements in Voltaic Cells, ofis especially practical when using oxid of which the following is aspecification. copper, and is true whether the oxid is in This inventionrelates to voltaic cells, and powder, flaky scale, or in the form of acom especially to an improved negative therefor. pressed and bakedelement, such as cylin- Reference is called to specification formders,rods or plates.

ing part of Letters Patent granted to me The fumes or vapor of sulphurmay be in- February 3, 1903 No. 719,752, and my prestroduced into thekiln or oven through a ent invention is an improvement thereon assuitable apparatus from the outside, or the to the process thereindescribed. sulphur may be placed directly in the kiln The above patentas well as some granted or oven. Either method is economical since inthe period intervening making use of sulthe necessary heat for oxidizingthe copper phur, and especially the mechanical mivis greater than theheat necessary to fume ture of sulphur as a negative electrode, are orvaporize sulphur.

open to several objections, such as increased WVhat I claim and desireto secure by internal resistance and loss of rated E. M. F. LettersPatent is,

because of ash. 1. A negative electrode for use in a vol- An excess ofsulphur whether in a chemtaic cell comprising a body of a depolarizicalor mechanical compound makes and ining oxid impregnated with the fumesof creases the internal resistance when used as sulfur. a negativeelement in a voltaic cell. 2. A negative electrode for use in a vol- Inthe present invention an electrode or taic cell comprising a body ofcopper oxid depolarizing element containing copper oxid impregnated withthe fumes of sulfur. or the other suitable metallic oxids men- Signed atAtlantic in the county of Cass tioned in my former patent, is subjectedto and State of Iowa, this third day of Febthe fumes or vapor of sulfur,and is imruary A. D., 1921.

pregnated with sulfur. This results in the MILLER EUGENE CONRAD.

